diff --git a/lib/cpp/src/concurrency/test/ThreadFactoryTests.h b/lib/cpp/src/concurrency/test/ThreadFactoryTests.h
index 859fbaf..a98dab6 100644
--- a/lib/cpp/src/concurrency/test/ThreadFactoryTests.h
+++ b/lib/cpp/src/concurrency/test/ThreadFactoryTests.h
@@ -24,6 +24,7 @@
 #include <concurrency/Util.h>
 
 #include <assert.h>
+#include <unistd.h>
 #include <iostream>
 #include <set>
 
diff --git a/lib/cpp/src/server/TNonblockingServer.h b/lib/cpp/src/server/TNonblockingServer.h
index 1684b64..8506507 100644
--- a/lib/cpp/src/server/TNonblockingServer.h
+++ b/lib/cpp/src/server/TNonblockingServer.h
@@ -28,6 +28,7 @@
 #include <string>
 #include <errno.h>
 #include <cstdlib>
+#include <unistd.h>
 #include <event.h>
 
 namespace apache { namespace thrift { namespace server {
diff --git a/lib/cpp/src/transport/TFileTransport.h b/lib/cpp/src/transport/TFileTransport.h
index fbaf2cd..b08c5c8 100644
--- a/lib/cpp/src/transport/TFileTransport.h
+++ b/lib/cpp/src/transport/TFileTransport.h
@@ -27,6 +27,8 @@
 #include <string>
 #include <stdio.h>
 
+#include <pthread.h>
+
 #include <boost/shared_ptr.hpp>
 
 namespace apache { namespace thrift { namespace transport {
diff --git a/lib/cpp/src/transport/TServerSocket.cpp b/lib/cpp/src/transport/TServerSocket.cpp
index 9b47aa5..10d3e9e 100644
--- a/lib/cpp/src/transport/TServerSocket.cpp
+++ b/lib/cpp/src/transport/TServerSocket.cpp
@@ -26,6 +26,7 @@
 #include <netdb.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include "TSocket.h"
 #include "TServerSocket.h"